#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int y, m;
	while (scanf("%d %d", &y, &m) != EOF)
	{
		if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12)
		{
			printf("31\n");
		}
		if (m == 4 || m == 6 || m == 9 || m == 11)
		{
			printf("30\n");
		}
		if (m == 2)
		{
			if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0)
			{
				printf("29\n");
			}
			else
			{
				printf("28\n");
			}
		}

	}


	return 0;
}